A Southeast Portland man who was found guilty earlier this week of conspiracy to distribute cocaine also pleaded guilty on Friday to charges levied on him while he was in jail.

Alphonso Leon Johnson, 37, was arrested in August 2011 on the cocaine charge and other allegations, according to the Multnomah County Sheriff's Office. But authorities said that Johnson continued to commit illegal acts by phone while awaiting trial at the Multnomah County Jail and was charged with three counts of promoting prostitution and two counts of tampering with witnesses involved in his case. Authorities said Johnson also had his girlfriend falsify a Multnomah County marriage license.

On Friday, Johnson entered guilty pleas to one count of promoting prostitution and one count of tampering with a witness and was sentenced to 40 months total in prison. He must also register as a sex offender for 10 years. Johnson faces additional federal penalties for violating his federal probation conditions, the Multnomah County Sheriff's Office said.